Vessel for holding highly-compressed gases



(No Model.)

U. K. MAYO. VESSEL FOR HOLDING HIGHLY COMPRESSED GASES.

I nz/ento r'.

Jim-(P Patented June 2,1891.

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I UNITED STATES PATENT GTFTCE.

URIAL K. MAYO, OF BOSTON, MASSACHUSETTS.

VESSEL FOR HOLDING HIGHLY-COMPRESSED GASES.

SPECIFICATION forming part of Letters Patent No. 453,265, dated June 2, 1891.

Application filed October 3, 1890- Serial No. 366,997. (No model.)

To all whom it may concern:

Be it known that I, URIAL K. MAYO, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Vessels for Holding Highly- Oompressed Gases or Fluids and in the Valves Thereof; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

Figure 1 is a vertical section of the upper portion of one of'said vessels constructed in accordance with my invention with a valve or cook having my improvement applied thereto. Fig.2 is a vertical section of said vessel on a reduced scale. cal section of the neck of the vessel and the lower portion of the valve-plug on an enlarged scale.

7 or united within and to the ends of the body in any suitable manner, usually by welding. By this construction of the vessel, owing to the comparative thinness of the soft steel, the weight of the vessel is reduced more than one-half over that of those heretofore or now in use for the purpose and made of an inferior and much thicker and heavier metal, and, moreover, notwithstanding the comparative thinness of the body of the vessel, it is stronger and capable of withstanding much greater pressure, and is consequently safer than are those in common use. The head B of the vessel is provided with a neck 0, screwthreaded on its exterior to receive the cock D, said neck 0 and its head being bored concentrically at a to form a passage to supply Fig. 3 is a verti-.

the vessel with gas. The neck is also chainbered in its upper part and provided, as usual, with a soft-metal seat?) or plug to receive the tapering end 0 of the plug E. The part 01 of said plug between the said part c and the screw 6 of it is cylindrical and of a diameter but a trifle less than the chamber in which the soft metal is arranged, the lower end of said part cl constituting a shoulder or seat f, which, when the plugE is forced down, bears on and covers the entire top of the soft metal and confines it within its chamber and forms an additional seat to prevent the escape of the gas.

Heretofore the taper of the inner end of the plug has extended from the periphery of the plug and has had no shoulder or seat to bear on and cover the top of the soft metal. In vessels of this class as heretofore constructed the chamber for containing the softmetal packing in the neck has beenmade of considerably larger diameter than the valveplug. WVhen made in this way, after the plug has been forced to a bearing in the soft metal for a few times and each time a little farther into it than before, the soft metal will squeeze out of its chamber and the valve will consequently soon leak and become worthless. A good deal of trouble and loss has resulted from this construction of the valve and its seat.

From the foregoing it will be seen that by my improvement the soft metal cannot be forced from its chamber by the plug, but is securely confined therein, whereby the valve will not leak, and, furthermore, by constructing the vessel-body of seamless soft steel, owingto its lightness, a great saving is effected in the cost of transportation, and it is also stronger, not liable to leak, and safer to handle. These vessels, after being charged with gas or vapor, are shipped to all parts of the country, and after the contents of the same are consumed or exhausted are returned to me to be recharged. Thus it will be seen that the item of freight is an important one and the reduction of the freight charges, less than one-half of the usual cost, will effect a great saving in expense.

What I claim is A cock having a plug tapering at one end and provided between said tapered portion and the screw connecting it to the cock wi th a cylindrical part (I and the soft-metal plug or chamber, substantially as and for the purpacking b, the lower end of said cylindrical pose set forth. 1 part (Z being adapted to bear upon and cover In testimony whereof Iaffix my signature in the top of said soft-metal plug or packing Z), presence of two witnesses.

5 and the diameter of said part 61 being suifi- URIAL K. MAYO.

ciently less than the diameter of the cham- Witnesses: ber containing said soft-metal plug or pack- S. N. PIPER,

ing to allow the said part (I to enter said S. V. HARMON. 

